Injector.



PATENTED OCT. 9, 1906.

R. G. BROOKE.

INJECTOR;

APPLICATION FILED JAN.2.'1906.

7 SHEETS-SHEET 1 THE NORRIS PETIRS ca, wnsmigaran, v. c.

No. 832,952. BATENTBD OCT. 9, 1906.

R. G. BROOKE. INJECTOR.

APPLICATION FILED JAN.2, 1906.

7 SHEETSSHEET 2.

PATENTED OCT. 9, 1906.

R. BROOKE.

INJECTOR. APPLICATION FILED mu. 2. 1900,

'! SHEETS-SHEET 3.

R. G. BROOKE.

IN J EOTOR. APPLICATION FILED JAN. 2,1906.

PATENTED OCT. 9, 1906.

7 SHEBTSSHEET 4v 1: "OR!!! Prrllu C0. WAINIIDTOI. I. c.

- PATENTED' OCT. 9, 1906. R. G. BROOKE.

INJECTOR APPLICATION FILED JAN. 2. 1906.

7 SHEETS-SHEET 5- No. 832,952. PATBNTEID 001 9, 1906.

R. G, BROOKE.

INJECTOR APPLICATION I'ILED'JAN. Z, 1906.

7 SHEETS-SHEET c.

.WEM

m: NORRIS PETERS c0, WASHINGTON, D, c.

PATENTED OCT. 9, 1906.

R. G. BROOKE.

INJECTOR. APPLICATION rmzn um. 2. 1900.

7 SHEETS-SHEET 7.

In 6b.. Inanmamn, b. r:-

- means (hereinafter called for distinction the ROBERT GRUNDY BROOKE,MACGLESFIELD, ENGLAND.

INJECTOR.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed January 2, 1906. Serial No. 294,274.

used to control the supply of steam to the in jector; but theconstructions heretofore adopted for this purpose possess variouspractical disadvantages.

Now the present invention has for its ob,

ject to improve the construction and working of such injectors. For thispurpose accord ing thereto the steam and water controlling valves are soconstructed and arranged in relation to each other and to the actuatingstarting-handle) used for starting and stopping the injector that whileboth valves can be caused to open by moving the handle in the directionto start the injector and both valves can be caused to.close by movingthe handle to its full extent in the opposite direction to stop theinjector, as heretofore, the stem-valve and the water-valve are capableof respectively regulating the supply of steam andwater in such a mannerthat after the valves have been opened to admit steam and water to theinjector and the water has been fully opened, the steam-valve can, whenrequired, be gradually opened to a further extent to supply .a largerquantity of steam, for example, at a lower pressure and the water-valvebe automatically and simultaneously closed more or less, so as suitablyto reduce the supply of water, and the former valve can afterward, whenrequired, be partially closed to reduce the supply of steam, forexample, at a higher pressure, and the water-valve be automatically andsimultaneously opened to a further extent, so as suitably to increasethe supply of water. In this way the quantity of water supplied to thein jector can be varied inversely to that of the steam during theworking of the injector to suit various working conditions, such as thepressure of the steam-supply, the height of lift, the head of thewater-supply, the tem-] .perature of the water, 800.

The water-valve, which is made separate from the steam-valve, asheretofore, may be operated from the spindle of the latter valve or fromthe operating-handle through suitable meansas, for example, a screw or alever. The steam-valve and its seat may be variously constructed andarranged to allow the supply of steam to be regulated to suit differentrequirements. The steam and water valves can be of various types and maybe arranged to open simultaneously, or practically so, and to closesimultaneously, or practically so. They are, however, preferablyarranged to'open one before the other and to close one before the other,so as to obviate any necessity of attempting to time them to becomeseated at the same moment, which in practice is difficult to effect in asatisfactory manner in cases where the valves are arranged to bearendwise against their seats when closed, as is preferred.

As will be obvious, steam and water valves and actuating or controllingmechanism therefor to operate in the manner set forth can be constructedin various forms and be used in connection with injectors which in otherrespects may be of various constructions.

According to one construction the watersupply is regulated by a compoundvalve so constructed and arranged that after being moved in onedirection to open the water-inlet fully it will by continued movement inthe same direction partly close the said inlet and upon being afterwardmoved'in the re- 1 verse direction 'it will first increase the size ofthe water-inlet and by continued movement in the same direction finallyclose the waterinlet. i

In the accompanying illustrative drawings, Figures 1, 2, and 3 representan example of an injector according to the construction just referredto, Fig. 1 being a vertical section of the injector with the' steam andwater valves closed, Fig. 2 being a diagrammatic view of the injectorwith the steam-valve partly open and the watervalve fully open, and Fig.3 being a view similar to Fig. 2, but showing the steam-valve fully openand the water-valve partly open. Fig. 4 is a sectional view representinga modification. Fig. 5 is a sectional view of a further modification.Fig; 6 is a partial section of an injector differing from that shown inFigs. 1,

2, and 3 in that the water-valve is opened and closed positively and thesteam-valve is opened positively, but closed by a spring. Figs. 7 and 8are sectional views taken at right angles to each other of an injectorwherein the valves are operated by means of a screw distinct from thevalve-spindles. Figs. 9 and 10 are partial sectional views of twoinjectors wherein levers are employed for operating the valve-spindles,and Fig. 11 shows a steam-valve adapted to prevent steam from enteringthe steam-nozzle until after the openings of the water-valve.

In the injector shown in Figs. 1, 2, and 3 the steam and water valvespindles 2 and 9, .respectively, are movable endwise and ar rangedparallel to one another. They are connected by an arm or yoke piece 25,

through which the spindles freely extend and which is carried at one endby a collar 26 on the steam-valve spindle 2 and is adapted at the otherend to act against a collar or abutment 27 (a nut is shown) on thewater-valve spindle 9, the steam-valve spindle being screw-threaded at28 and engaging a correspondingly screw-threaded stationary part 29of'the injector-casing 4. The startinghandle 16 is fixed to the spindle2. For regulating the steam-supply the inner end portion of thesteam-spindle 2 is provided with or shaped to form a steam-valve 1,thatis adapted to fit against a seat 7 011 the steamnozzle 5. In caseswhere it is desired to obtain a closer regulation of the steam than canbe obtained with a plain steam-valve, such as 1, such a valve may, as inthe example now being described, be provided with an extension orregulator of known construction comprising a cylindrical portion 42,that extends centrally through and is made of smaller diameter than thecontracted part 5 of the steam-nozzle 5, and a conical free end portion43 to adapt it to serve as a steamregulator, the arrangement being suchthat when the spindle 2 is moved in a direction to open the main valve 1and admit steam to the steam-cone 5 the cylindrical portion 42 of theextension will project through the con tracted part 5 of thesteam-nozzle 5 for some time after the valve 1 has commenced to open, soas to form an annular steam-inlet of one area, and then the supply ofsteam can be gradually increased by causing the conical free end portion43 of the extension or regulator gradually to leave the contracted part5 of the nozzle and increase thesteam-inlet area, while the supply ofsteam can be reduced by moving the spindle and regulator in the oppositedirection. In this way a more delicate regulation of the steam-supplycan be obtained to suit different steam-pressures than can be obtainedby a single conical steam-valve. The extension or regulator 42 43 maybeformed, as heretofore, with a centrally-arranged hole 44 with lateralbranches 45 to improve the vacuum at starting. For regulating thewater-- supply a compound water-valve is used, comprising two oppositelyand reversely arranged truncated cones 8 8 (hereinafter called, fordistinction, main and supplementary cones,) arranged at a suitabledistance apart upon the spindle 9 and at opposite sides of a Water-inletopening 11, through which the part of the spindle 9 between the twocones 8 and 8' works, the opening 11 connecting two waterways in thevalve-case, of which one waterwayviz., 10communicates with awater-supply pipe and the other communicates with a port 11*, openinginto the interior of the injector. Located within the water-valve case20 and surrounding the valve-spindle 9, extending therethrough, is acoiled spring 17, of which one end bears against a cover 30, screwedintothe valvecase 20, and the other end bears against the main cone 8and tends to cause it to keep closed or to close the water-inlet opening11.

The arrangement is such that if the starting-handle 16 be turned in adirection to open the steam-valve 1 and start the injector the arm oryoke piece 25 will shortly bear against the abutment 27 and commence tomove the Water-valve spindle 9 outward against the action of thespring17, and so cause the main cone 8 to open the water-inlet passage 11, thesteam entering the nozzle 5 through the annular space between the nozzleand the cylindrical portion 42 ofthe extension or regulator (if such beemployed) until the end of the cylindrical portion 42 comes level withthe outer end of the contracted portion 5 of the nozzle 5 when thewater-valve 8 8 will have been moved into the fully-open position.(Shownin Fig. 2.) By continuing the movement of the startinghandle so asto cause the conical end 43 of the steam-valve regulator gradually toleave the contracted end 5 of the nozzle and increase the supply ofsteam, Fig. 3-as, for instance, 'when using low-pressure steam thesupplementary cone 8 will be caused to close the Water-inlet opening 11partly and suitably reduce the supply of water, and upon afterwardmoving the=starting-handle in the reverse direction so as to cause theconical end of the regulator to reenter the nozzle and reduce the supplyof steamas, for instance, when using high-pressure steam-the compoundvalve 8 8 under the action of its spring'17 will be causedsimultaneouslyto move in the opposite direction, the supplementary cone8 then moving away from the-water-inlet opening 11, so as to increasesuitably the supply of Water. On completing the movement of the handlein the lastment oned direction the main cone 8 will be caused by itsspring 17 to close the saidwater-inlet openingand shutoff the supply ofwater, and the steam-valve 1 will be caused to cut off the supply ofsteam, the parts then resuming the position shown in ig. 1. p

In Figs. 1, 2, and 3 the main and supplementary cones 8 and 8 are formedin one piece with the spindle 9 9; but the main cone 8 may, as shown inFig. 4, be formed in one piece with or be fixed to the valve-spindle 9and the supplementary cone 8 be screwed on the extension 9 of thespindle 9, so as to be adjustable thereon and be formed to a suitableangle to meet circumstances.

8 is a lock-nut.

It is to be clearly understood that the use of an extension or regulator42 43 is not an essential feature of an injector constructed accordlngto this invention. When the regulator 42 43 is not used, thewater-passage 11 may be increased in size and the main and supplementarywater-valve cones 8 and 8* be arranged closer together, so that the cone8 will come into action earlier-that is to say, in some cases before thesteam-valve is withdrawn from the steam-nozzle far enough to lose itsregulating effect altogether-or the angles of the valves 8 and 8 mightbe suitably varied.

When the water-valve is opened from the spindle 2 of the steam-valve 1and closed by a spring 17, as described, the water-valve can be causedto come to rest in a position to shut off the water-supply before thesteamvalve need have come to rest in its position of closure, therebyobviating any difficulty in insuring the complete closing of the twovalves or any necessity for timing the valves to close against theirseats simultaneously, which is diificult to effect in practice. This isan important feature in the construction of injectors having separatesteam and water valves and may be used in injectors in which not onlyare the steam and watervalves arranged with their axes parallel to oneanother, but also in cases where they are arranged with their axes atright or other angles to each other. I

The spring 17 for moving the water-valve into the closed position may,as shown in Fig. 5, be arranged outside the valve-case 20 and betweenthe recessed end of the arm 25 and a washer 9 bearing against a shoulder9" on the valve-spindle 9. In this case the arm 25 is held firmly inplace endwise on the spindle 2, which, however, is free to turn therein.

Fig. 6 shows in vertical section a portion of the injector wherein thespindles 2 and 9 of the regulating steam and water valves 1 and 8 8 arearranged parallel to one another and connected by an arm or yoke piece25, as before but the steam-valve. 1 is arranged to be opened bymovement of the spindle 9 of the water-valve 8 8 and to be closed by aspring 17 and the starting-handle 16 is fixed to the water-valve spindle9, which is screwthreaded at 31 and arranged to engage a correspondinglyscrew-threaded stationary part 32 of the injector-casing. In this casethe steam-valve 1 is shown without an additional extension or regulator.

In the injector, of which Fig. Z is a section corresponding to the lineA A of Fig. 8 and Fig. 8 is a section corresponding to the line B B ofFig. 7, the spindle 2 of the steam-valve 1 and the spindle 9 of thecompound water valve 8 8 are connected to a yoke-piece 25, to which issecured a rotary screw 33, which engages a correspondinglyscrew-threaded part 34, carried by the body 4 of the injector and towhich the starting-handle 16 is fixed. In this case the regulating steamand water valves 1 and 3 8 might be both connected to the yoke-piece25*, so as to be moved in one direction only thereby against the actionof one or more springs that cause them to move in the reverse directionwhen the starting-handle is turned inthe opposite direction. In theexample only one spring 17, which surrounds the spindle 9 and actsagainst the water-valve 8 8", is used, the yoke-piece 25 being securedto the steamvalve spindle'2 between a shoulder 2 thereon and a nut 35;but both the steam-valve and the water-valve might be arranged to beopened in positive manner against the action of springs that serve toclose them independently of each other.

The steam-valve and the compound watervalve may be connected throughtheir spindles in various ways to an operating-lever, which is common tothem, and whereby they can be directly moved in either direction, asrequired. Fig. 9 shows, by way of example, an injector wherein thesteam-valve spindle 2 and the water-valve spindle 9 are connected to acommon yoke-piece 36, that is mounted to slide on a fixed guide-pin 37and is connected through a pair of links 38 to the forked end of ahand-lever 16 which is pivoted at an intermediate part of its lengthviz., at 16 t0 the injector-casing 4, the arrangement being such that byturning the hand-lever in one or other direction about its pivot thevalve-spindles can be caused to move endwise in one or other directionto turn on, to regulate, or to cut off the supply of steam and water, ashereinbefore described. The yoke-piece 36 is shown provided with aset-screw 39, whereby it and the attached parts can be fixed in anyposition into which they are moved. In this example means of known kindare provided for the further regulation of the steam, the steamvalvespindle 2 being provided with an extension 46, adapted practically tofit the correspondingly-shaped end of the steam-nozzle 5 when the valve1 is closed, so that the area of the steam-inlet will begin to increasegradually when the valve commences its opening movement. The injector isalso provided in a known manner with a suction-valve 46 loaded with alight spring 46 but adapted to enable the vacuum in the combining-nozzle46 under certain working conditions to draw in as required an additionalsupply through openings 46, located in the combining-nozzle andsupplementary to its main water-inlet 46.

Fig. 10 shows an injector of slightly-modified construction wherein theforked end of the hand-lever 16 is pivoted at one end viz., at 16-to theinjectoncasing 4 and the links 38 are connected to it at a part betweenits ends, so that the steam-valve can be opened by pulling the lever tothe left instead of pulling it to the right, as is done with thearrangement shown in Fig. 9.

For causing the steam to be turned on after the water the steam-valve 1may, as shown in Fig. 11, be provided at its discharge side with acylindrical extension 47, arranged to work in a correspondingly-formedrecess 5 in theinlet end of the steam-nozzle 5, so that on opening thesteam-valve steam will not be admitted to the steam-nozzle until thecylindrical extension 47 leaves the recess 5", as it will after thewater-valve has been opened. The extension or regulator 42 43 when usedwith such a valve is arranged at the inner side of the extension 47, asshown.

The overflow-valves of injectors embodying the present invention mayalso, if desired, be arranged to be operated from the startinghandle orequivalent part, as in known constructions of injectors.

. Various changes can be made in construction without departing from theessential features of the invention.

What I claim is 1. An injector comprising a steam-controlling valve, awater-controlling valve, and an-actuating device adapted by movement inone direction to cause the opening of both of said valves and bymovement in the opposite direction to cause the closing of both of saidvalves, said valves being so constructed and related to said actuatingdevice that after said water-controlling valve has been opened to itsfull extent by movement of said actuating device continued movement ofsaid actuating device in the same direction will reduce the opening ofsaid water-controlling valve and will simultaneously increase theopening of said steam-controlling valve.

2. An injector comprising a steam-controlling valve, a water-controllingvalve, an actuating device adapted by movement in one direction to causethe opening of both of said valves and by movement in the oppositedirection to cause the closing of both of said valves, and for one ofsaid valves elastic means adapted to close it or keep it closed when notprevented by said actuating device, said valves being so constructed andrelated to said actuating device that after said water-controlling valvehas been opened to its full extent by movement of said actuating devicecontinued movement of said actuating device in the same direction willreduce the opening of said water-controlling valve and willsimultaneously increase the opening of said steam-controlling valve.

3. An injector comprising a steamcontrolling valve, a water-controllingvalve, an actuating device adapted by movement in one direction to causethe opening of both of said valves and by movement in the oppositedirection to cause the closing of both of said valves, and for saidwater-controlling valve elastic means adapted to close it or keep itclosed when not prevented by said actuating device, said valves being soconstructed and related to said actuatin device that after saidwater-controlling va ve has been opened to its full extent by movementof said actuating device continued movement of said actuating device inthe same direction will reduce the opening of said water-controllingvalve and will simultaneously increase the opening of saidsteam-controlling valve.

4. An injector comprising a steam-controlling valve, a water-controllingvalve, and an actuating device adapted by movement in one direction tocause the opening of both of said valves and by movement in the oppositedirection to cause the closing of both of said valves, said valves beingso constructed and related to said actuating device that after saidwater-controlling valve has been opened to its full extent by movementof said actuating device continued movement of said actuating device inthe same direction will reduce the opening of said water-controllingvalve and will simultaneously increase the opening of saidsteam-controlling valve, and said water-controlling valve being acompound valve adapted after being moved in one direction so. as to opento its full extent to have its opening reduced by its continued movementin the same direction.

5. An injector comprising a steam-controlling valve, a water-controllingvalve, and an actuating device adapted by movement in one direction tocause the opening of both of said valves and by movement in the oppositedirection to cause the closing of both of said valves, said valves beingso constructed and related to said actuating device that after saidwater-coritrolling valve has been opened to its full extent by movementof said actuating device continued movement of said actuating device inthe same direction will reduce the opening of said water-controllingvalve and will simultaneously increase the opening of saidsteam-controlling valve, and said water-controlling valve being acompound valve comprising two parts which are arranged on opposite sidesof the water-aperture intended to be opened and closed thereby and bothof which are adapted to control the passage of water through saidaperture so that said water-controlling valve is adapted to be bymovement in one direction first opened to its full extent by the motionof one of its said parts away from said aperture and afterward to havethe extent of its opening reduced by movement of the other of its saidparts toward said aperture.

6. An injector comprising separate steam and water controlling valves,separate spindles carrying suchvalves, an actuating device common tosaid spindles, one of said spindles being adapted to allow said deviceafter causing the closure of the corresponding valve to continue itsmovement in the same direction,

and elastic means adapted to close the lastmentioned valve and to keepit closed when not prevented by said actuating device.

7. An injector comprising a steam-controlling valve, a water-controllingvalve, separate spindles carrying said valves, an actuating devicecommon to said spindles, said spindles carrying said water-controllingvalve being adapted to allow said device after causing the closure ofsaid water-controlling valve to continue its movement in the samedirection, and elastic means adapted to close said water controllingvalve or keep it closed when not prevented by said actuating device.

8. An injector comprising a steam-controlling valve, a water controllingvalve, parallel spindles carrying said valves, a yokepiece operativelyconnected to both of said spindles, oneof said spindles being adapted toallow said'device after causing the closure of said water-controllingvalve to continue its movement in the same direction, and elastic meansadapted to close the last-mentioned valve or keep it closed when notprevented by said yoke-piece.

9. An injector comprising 'a steam-controlling valve, a watercontrollingvalve, parallel spindles carrying said valves, a yokepiece operativelyconnected to both of said spindles, said spindle carrying said watercontrolling valve being adapted to allow said yoke-piece after causingthe closure of said water-controlling valve to continue its movement inthe same direction, and elastic means adapted to close saidwater-controlling valve or keep it closed when not prevented by saidyoke-piece.

10. An injector comprising a steam-controlling valve, awater-controlling valve, parallel spindles carrying said valves, a yokepiece operatively connected to both of said spindles, one of saidspindles being adapted to allow said yoke-piece after causing theclosure of the corresponding valve to continue its movement in the samedirection, and elastic means adapted to close the lastmentioned valve orkeep it closed when not prevented by said yoke-piece, and an actuatingdevice adapted to operate said yokepiece and by movement in onedirection to open both of said valves and by movement in the oppositedirection to close both of said valves, said valves being so constructedand related to said actuating device that after said water-controllingvalve has been opened to its full extent by movement of said actuatingdevice continued movement of said actuating device in the samedirectionwill reduce the opening of said water-controlling valve andwill simultaneously increase the opening of said steam-controllingvalve.

11. An injector comprising separate steam and water controlling valves,separate spindles carrying said valves, an actuating device common tosaid spindles and adapted thereby to cause the opening and closing ofsaid valves, one of said spindles being adapted to allow said actuatingdevice after causing the closure of the corresponding valve to continueits movement in the same direction, and elastic means adapted to closethe last mentioned valve or keep it closed when not prevented by saidactuating device.

12. An injector comprising separate steam and water controlling valves,separate spindles carrying said valves, an actuating device common tosaid spindles and adapted thereby to cause the opening and closing ofsaid valves, one of said spindles being adapted to allow said actuatingdevice after causing the closure of the corresponding valve to continueits movement in the same direction, and elastic means adapted to closethe lastmentioned valve or keep it closed when not prevented by saidactuating device, said valves being so constructed and related to saidactuating device that after said watercontrolling valvehas been openedto its full extent by movement of said actuating device continuedmovement of said actuating device in the same direction will reduce theopening of said water-controlling valve and will simultaneously increasethe opening of said steam-controlling valve.

Signed at Manchester, county ofLancaster, England, this 20th day ofDecember, 1905.

ROBERT GRUNDY BROOKE.

Witnesses:

ERNALD SIMPsoN MOSELEY, MALCOLM S ETnURsT.

